Process of plating cast iron or steel.



TED STATES PATE WW FREDERICK MOENCH, OF RUSHVILLE, ILLINOIS.

- PROCESS OF PLATING CAST IRON OR STEEL.

No Drawing.

a citizen of the United States, and a resident of Rushville, in thecounty of Schuyler and State of Illinois, have invented a' certain newand useful Improvement in Processes of Plating Cast Iron or Steel, ofwhich the following, isa' specification.

My invention relates to improvements in processes for plating cast ironand steel, and it cdonsists in the steps hereinafter enumerate 1 -Anobject of my invention is to provide a process of plating cast iron orsteel with aluminum so that the latter is firmly secured to the surfaceof the iron or steel.

' A further object of my invention is to provide a process of the typedescribed which may bereadily carried out without the use of expensiveapparatus.

A further object of my invention is to provide a simple process forplating iron or steel with aluminum which can be carried out with theuse of ordinary chemicals that can be obtained at a small cost in anypart of the country.

Other objects and advantages will appear in the following specification,and the novel features of the invention will be particu-.

.bing with a brush of any kind and with clear water, either hot or cold,and dry the iron or steel with a clean cloth. The iron or steel is nowimmersed into boiling hydrochloric acid C. P. in a vessel which resiststhe action of hydrochloric acid, such as granite, glass, or chinaware.The iron or steel is left for a few minutes, more or less, according tothe amount of rust on the iron or steel article. It is now rinsed withclear water, hot or cold, and'immersed in the hot acid a secondtime ifnot all of the rust is removed. Instead of immersing it in the hothydrochloric acid,

I can simply apply the hot acid to the article.

of bicarbonate of soda or carbonate of magnesium until all trace of theacid is gone. The soda or magnesium is now rinsed OE With clear water,and the iron or steel is wiped dry with a clean cloth.

A solution of potassium permanganate and chlorate of potassium (one ortwo grains of each to each ounce of water) is applied to the article,and then the article is rinsed off with clear water, and wiped dry witha clean cloth. It is then heated to drive off all moisture and is nowready for the plating.

The aluminum'is prepared by cutting it into small bits which are washedwith per oxid of hydrogen and then rinsed with clear water and dried.

The iron or steel is now heated to a dull red heat and the aluminum isalso heated to almost the melting point. The latter is now grasped bythe pliers and the aluminum is rubbed over the iron or steel spreadingit as it melts. A small portion of the iron or steel is covered at atime, and while the aluminum is in its melted condition, it is scratchedin with an iridio-platinum pointed instrument or a silver plated steelsharp edged instrument. After it is well scratched in, it may besmoothed off while the aluminum is in a melted condition; One mayproceed this way until the desired surface is covered. It should befinished as the process proceeds.

The article is now left to cool slowly under cover or partial cover, andwhen cold can be polished or finished ina manner to suit the operator.

I- claim 1. The herein described process of plating iron or steel withaluminum which consists in removing all 'oxids, and subsequently allorganic matter from the article to be plated,

quently cooling the article slowly.

Specification of Letters Patent. Patented Dec. 21, 1915. V Applicationfiled April 12, 1915. Serial No. 20,741..

2. The herein describedprocess of plating iron or steel with aluminumwhich consists in first removing the oxidized portions of the iron orsteel by hot hydrochloric acid and subsequently removing the organicmatter by potassium permanganate and chlorate of potassium, heatingthe'article to a dull red heat, rubbing the article with a piece ofaluminum previously Washed with peroxid of hydrogen andheated almost tothe melting point, scratching the aluminum in on the surface of the ironor steel, smoothing the aluminum coating while the latter is melted, andallowingthe aluminum coated article to cool slowly.

- FREDERICK MOENCH. Witnesses:

DON GARRIsON, H. H. SPEED.

